CN211301357U - Negative pressure aspirator with safety protection - Google Patents
Negative pressure aspirator with safety protection Download PDFInfo
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- CN211301357U CN211301357U CN201921288545.1U CN201921288545U CN211301357U CN 211301357 U CN211301357 U CN 211301357U CN 201921288545 U CN201921288545 U CN 201921288545U CN 211301357 U CN211301357 U CN 211301357U
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- negative pressure
- conduit
- working
- pipe head
- threaded pipe
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- 238000000926 separation method Methods 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000009545 invasion Effects 0.000 claims abstract description 12
- 230000001012 protector Effects 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 239000000523 sample Substances 0.000 claims abstract description 11
- 238000007654 immersion Methods 0.000 claims abstract description 8
- 241000521257 Hydrops Species 0.000 abstract description 14
- 206010030113 Oedema Diseases 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 201000003130 ventricular septal defect Diseases 0.000 description 10
- 239000004744 fabric Substances 0.000 description 8
- 206010036790 Productive cough Diseases 0.000 description 6
- 230000028327 secretion Effects 0.000 description 6
- 208000024794 sputum Diseases 0.000 description 6
- 210000003802 sputum Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 210000002345 respiratory system Anatomy 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010062717 Increased upper airway secretion Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000026435 phlegm Diseases 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
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Abstract
The utility model belongs to the technical field of medical apparatus and instruments, and relates to a negative pressure aspirator with safety protection, which comprises a negative pressure working device with a rechargeable storage battery and a water invasion detection protector, a working conduit, a separation conduit, a hydrops collecting device and a conveying conduit; the working conduit and the separation conduit are connected by a first hard threaded pipe head and a second hard threaded pipe head; the negative pressure working device is fixedly connected with the other end of the working conduit; the accumulated liquid collecting device is fixedly connected with the other ends of the separation guide pipe and the conveying guide pipe; the negative pressure working device is integrated with a water invasion detection protector with a water immersion probe. The advantages are that: is suitable for various occasions of outpatient service, sickrooms and patient activities or non-activities; the built-in water invasion protector is safe and controllable; the operation is simple and convenient, and doctors and patients can use the device.
Description
Technical Field
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a vacuum extractor with safety protection.
Background
When internal medicine critical patient sputum is many and be difficult for coughing out, accessible adjustment patient prone position or help the patient to clear away respiratory tract secretion with the help of negative pressure instrument in the ward, and this type of instrument all has certain volume, generally still need the power to last the power supply, it is all inconvenient to use and carry, when needing promptly to inhale phlegm in transit the patient on the way, the nurse often uses the syringe to aspirate sputum for the patient, the sputum is sticky, often be difficult for by the suction, the nurse need spend great strength, it is extremely inconvenient to operate. For the VSD patient, a long time is needed to enable the wound to be in a negative pressure state, but the conventional negative pressure instrument needs to be powered on and is not portable enough, so that the VSD patient with the upper limb capable of performing a proper amount of activity cannot independently get out of the bed to perform corresponding activities. Although the prior art also has some portable negative pressure suction apparatuses, the conventional negative pressure device with slightly good convenience has relatively single function and cannot meet various clinical application occasions; the operation is more complex and is not easy to be handed; the safety is not sufficient.
Patent documents: CN107693863A, application date: 2017.11.09 discloses a portable emergency call negative pressure aspirator, including negative pressure container, solenoid valve, honeycomb duct and battery case, be provided with the air cock on the negative pressure container, the air cock can be dismantled with the solenoid valve and be connected, be provided with stretch fabric on the negative pressure container, stretch fabric end and battery case fixed connection, be formed with the patchhole between negative pressure container, stretch fabric and the battery case, the honeycomb duct is connected with the solenoid valve, solenoid valve and battery case electric connection, the honeycomb duct surface overlaps in proper order has silver fibre cloth and universal metal collapsible tube, be provided with finger stall, LED lamp area and temperature switch on the universal metal collapsible tube, LED lamp area and temperature switch all with universal metal collapsible tube fixed connection, LED lamp area, temperature switch and battery case electric connection in proper order, the finger stall side is provided with button switch, solenoid valve, honeycomb duct and battery case, Button switch and battery case electric connection in proper order, the honeycomb duct end is provided with the check valve, the check valve can be dismantled with the honeycomb duct and be connected, check valve one end is provided with the disposable pipe box that is used for entangling universal metal collapsible tube, the disposable air bag of buffering has been overlapped to the check valve surface, disposable air bag of buffering and check valve fixed connection, disposable pipe box sets up with disposable air bag formula as an organic whole. The patent document addresses the embodiments: the existing negative pressure aspirator mainly comprises a negative pressure container and an aspirating tube, the negative pressure container is often required to be held by hands when in use and carrying, the technical problem of portability is general, elastic cloth is arranged on the negative pressure container, the tail end of the elastic cloth is fixedly connected with a battery box, inserting holes are formed between the negative pressure container and the battery box, a palm can penetrate through the inserting holes when in carrying and using, so that the negative pressure container and the battery box clamp arms through the effect of the elastic cloth, the negative pressure container is not required to be held specially when in carrying and using, and the carrying and the using are convenient. However, the suction apparatus can be used only by installing a battery, has single function, is suitable for outpatients, does not need to be fixed on arms for sputum suction in the transfer process of patients, and has the advantages that the structure of elastic cloth and the like undoubtedly increases the complexity of the mechanism, bacteria are easy to carry, cross infection is caused, and the application occasions of the hospital negative pressure suction apparatus are various and are not limited to outpatients, so that the negative pressure suction apparatus cannot meet the application requirements of multiple occasions. In addition, the convenient negative pressure aspirator for outpatient service is complicated in mechanism, not convenient enough in operation, and the using mode increases the burden of doctors, so that the use of non-medical personnel such as patients or relatives thereof is difficult. In addition, the convenient negative pressure aspirator for outpatient service needs to pay close attention in use, prevents backflow after a liquid accumulation bottle is full, increases burden of doctors and patients, and is insufficient in safety. Generally, the practicability and the popularization are not good enough.
In view of the above, there is a need for a vacuum extractor that can be used in a variety of situations, is convenient to use, and has high safety.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art, providing a negative pressure suction apparatus which can be used in various occasions, is convenient to use, has strong safety, can be operated by doctors, nurses, patients and family members of the patients, and is convenient to carry.
In order to achieve the purpose, the utility model adopts the technical proposal that:
a negative pressure aspirator with safety protection comprises a negative pressure working device, a working conduit, a separation conduit, a hydrops collecting device and a conveying conduit; the negative pressure working device is provided with a rechargeable storage battery; one end of the working conduit is provided with a first hard threaded pipe head; one end of the separation conduit is provided with a second hard threaded pipe head; one end of the working conduit with the first hard threaded pipe head is connected with one end of the separation conduit with the second hard threaded pipe head through threads; the negative pressure working device is fixedly connected with the other end of the working conduit; the other end of the separation conduit is fixedly connected with the accumulated liquid collecting device; one end of the conveying conduit is fixedly connected with the accumulated liquid collecting device; and two guide pipes connected with the accumulated liquid collecting device are arranged in parallel.
In a preferred technical scheme, the negative pressure working device is integrated with a water invasion detection protector with a water invasion probe.
Preferably, the end of the separation conduit inserted into the fluid collection device is longer than the end of the delivery conduit inserted into the fluid collection device.
As a preferred technical scheme, a plurality of display screens and a plurality of control buttons are arranged on the negative pressure working device.
As a preferred technical scheme, the first hard threaded pipe head is of a hollow cylindrical cavity structure provided with internal threads.
As a preferable technical scheme, the second hard threaded pipe head is fixed by sleeving two hollow cylindrical cavities with different outer diameters inside and outside, and the hollow cylindrical cavity with the small outer diameter is provided with external threads and has the same size and specification as the inner diameter and the internal threads of the first hard threaded pipe head.
As a preferable technical scheme, the second hard threaded pipe head is provided with a twisting handle.
The utility model has the advantages that:
1. the negative pressure aspirator with safety protection comprises a negative pressure working device, a working conduit, a separation conduit, a effusion collecting device and a conveying conduit; the negative pressure working device is provided with a rechargeable storage battery, can provide two modes of continuous power supply of an external power supply and power supply through the storage battery, can continuously supply power to the negative pressure working device through the external power supply during long-time rest, and can also supply power to the negative pressure working device through the storage battery carried by the negative pressure working device during proper activity, so that the negative pressure working device can be suitable for various occasions of outpatient service, sickrooms and patient activities or non-activities.
2. The end of the separation conduit inserted into the accumulated liquid collecting device is longer than the end of the conveying conduit inserted into the accumulated liquid collecting device, so that the separation conduit can be contacted with and guided into the separation conduit when the accumulated liquid in the accumulated liquid collecting device is excessive; the negative pressure working device is internally provided with a water invasion detection protector, a water immersion probe is arranged at the joint of the negative pressure working device and the working conduit, and when the accumulated liquid is sucked into the working conduit, the water immersion probe contacts the accumulated liquid, triggers an alarm to indicate and automatically disconnects the negative pressure working switch.
3. Work pipe wherein one end has first stereoplasm screw thread tube head, separation pipe wherein one end has second stereoplasm screw thread tube head, work pipe has the one end of first stereoplasm screw thread tube head with separation pipe has the one end of second stereoplasm screw thread tube head is passed through the screw thread and is linked to each other when the hydrops collection device is well accumulated the liquid volume and will be full, the separation pipe is changed to accessible stereoplasm screw thread tube head and the follow-up device that connects is whole, easy operation.
4. The negative pressure aspirator with the safety protection is easy to operate and control, can be directly operated by a VSD patient or family members of the patient under the permission of a doctor, is provided with a power supply and is convenient to carry, so that the patient can keep an affected part in a necessary negative pressure state while moving, and the medical compliance of the VSD patient is improved; the utility model has the advantages of its small, simple structure, do benefit to doctor, nurse and hand-carry, can make things convenient for doctor's nurse to clear up respiratory secretion for the patient on the way in critical patient's transportation, improved critical patient's transportation safety.
5. The negative pressure suction apparatus with the safety protection has stable and reliable negative pressure work and good popularization, and is suitable for different departments.
Drawings
Fig. 1 is a schematic perspective view of a vacuum extractor with safety protection of the present invention.
FIG. 2 is a schematic perspective view of the vacuum extractor with safety protection of the vacuum working device of the present invention.
Fig. 3 is a schematic view of the interface between the first hard thread tube head and the second hard thread tube head of the vacuum extractor with safety protection.
FIG. 4 is a schematic view of the vacuum extractor with safety protection and the external connection pipe.
Fig. 5 is another negative pressure aspirator with safety protection of the utility model.
Detailed Description
The present invention will be further described with reference to the following detailed description. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the disclosure of the present invention, and such equivalents also fall within the scope of the appended claims.
The reference numerals and components referred to in the drawings are as follows:
1. negative pressure working device 2, working conduit 3, separating conduit
4. Hydrops collecting device 5, conveying conduit 6, immersion probe
7. Control button 8, display screen 9, first hard thread tube head
10. A second hard thread pipe head 11, a twisting handle 12 and a liquid accumulation bottle
13. Hydrops bottle cap 14, external connecting conduit 15 and hydrops bag
16. Liquid accumulation bag cover
Example 1
Please refer to fig. 1, fig. 1 is a schematic perspective view of a vacuum extractor with safety protection of the present invention. The negative pressure aspirator with safety protection comprises a negative pressure working device 1, a working conduit 2, a separation conduit 3, a effusion collecting device 4 and a conveying conduit 5; the negative pressure working device 1 is provided with a rechargeable battery. Please refer to fig. 2, fig. 2 is a schematic perspective view of the negative pressure working device of the negative pressure suction apparatus with safety protection of the present invention. The device is characterized in that a water invasion detection protector is arranged inside the negative pressure working device 1, a water immersion probe 6 is arranged at the joint of the negative pressure working device 1 and the working conduit 2, a power key, a switch key, a pressure increasing key and a pressure reducing key are arranged on the negative pressure working device 1, four control buttons 7 and a display screen 8 are arranged on the negative pressure working device 1, and the negative pressure working device 1 is fixedly connected with one end of the working conduit 2. Please refer to fig. 3, fig. 3 is a schematic view of an interface between the first hard thread tube head and the second hard thread tube head of the vacuum extractor with safety protection of the present invention. The other end of work pipe 2 is equipped with first stereoplasm screw tube head 9, separation pipe 3 one end wherein is equipped with second stereoplasm screw tube head 10, first stereoplasm screw tube head 9 is for being equipped with internal screw thread hollow cylinder cavity structures, second stereoplasm screw tube head 10 cup joints fixedly by inside and outside two hollow cylinder cavities that the external diameter is different, the hollow cylinder cavity that its external diameter is little have the external screw thread and with the internal diameter and the internal thread size of first stereoplasm screw tube head 9, specification are the same, second stereoplasm screw tube head 10 is equipped with on it and twists reverse handle 11. Referring to fig. 1 again, the effusion collecting device 4 is composed of an effusion bottle 12 and an effusion bottle cap 13, and the effusion bottle 12 is connected with the effusion bottle cap 13; the other end of the separation conduit 3 is fixedly connected with the effusion bottle cap 13; wherein one end of the conveying conduit 5 is fixedly connected with the effusion bottle cap 13, and one end of the separation conduit 3 inserted into the effusion collecting device 4 is longer than one end of the conveying conduit 5 inserted into the effusion collecting device 4.
The utility model relates to a method for using negative pressure suction apparatus with safety protection as follows: when a patient difficultly expectorates the secretion of the respiratory tract secretion or needs urgent sputum suction during the transportation of the patient, the open end of the conveying pipe 5 is directly inserted into the mouth and the nose of the patient, a power key and a switch key are successively pressed, the negative pressure is adjusted through a pressure increasing key or a pressure reducing key according to actual needs to suck the sputum, whether the conveying pipe 5 is in a working state or not can be judged according to the state displayed in the display screen 8, after the secretion is cleaned, the switch key and the power key are closed, the conveying pipe 5 is taken out, and the separation pipe 3 and the whole subsequent devices connected with the conveying pipe are replaced through the second hard thread pipe head 10. Please refer to fig. 4, fig. 4 is a schematic view of the connection between the vacuum extractor with safety protection and the external conduit according to the present invention. For the VSD patient, the open end of the conveying pipe 5 is connected with an external pipe 14 at the wound of the VSD patient, a power key and an on-off key are pressed in sequence, the negative pressure is adjusted through a pressure increasing key or a pressure reducing key according to actual needs, whether the VSD patient is in a working state or not can be judged through the state displayed in the display screen 8 in the period, when the accumulated liquid in the liquid accumulation bottle 12 reaches a certain amount, the on-off key is closed, the external pipe 14 is clamped by a clamp, the separation pipe 3 and the whole subsequent devices connected with the external pipe head 10 are replaced through the second hard threaded pipe head 10, the negative pressure suction operation is continued, and when the VSD patient is in an inactive state, the external energy source can be connected for continuous power supply. When the hydrops in the hydrops collection device 4 is excessive and is introduced into the working conduit 2, the hydrops is in contact with the immersion probe 6, and then the built-in water intrusion detection protector of the negative pressure working device 1 is triggered to warn and automatically disconnect the negative pressure working switch.
It should be noted that: the negative pressure aspirator with the safety protection comprises a negative pressure working device 1, a working conduit 2, a separation conduit 3, a hydrops collecting device 4 and a conveying conduit 5, wherein the negative pressure working device 1 is provided with a rechargeable storage battery and can provide two modes of continuous power supply of an external power supply and power supply through the storage battery per se, so that the negative pressure aspirator can be continuously powered by the external power supply during long-time rest and can also be powered by the storage battery carried by the negative pressure aspirator per se during proper activities; a water invasion detection protector is arranged in the negative pressure working device 1, a soaking probe 6 of the water invasion detection protector is positioned at the joint of the working conduit 2 and the negative pressure working device 1, when effusion is sucked into the working conduit 2, the soaking probe 6 contacts the effusion, an alarm indication is triggered, and a negative pressure working switch is automatically switched off; the water invasion detection protector can be purchased from the market; the negative pressure working device 1 is provided with a plurality of control buttons 7 and a plurality of display screens 8, the control buttons 7 can control the power supply, the working switch and the negative pressure, and the display screens 8 can reflect the current working state of the negative pressure working device 1; one end of the working conduit 2 is provided with a first hard threaded pipe head 9, one end of the separation conduit 3 is provided with a second hard threaded pipe head 10, the first hard threaded pipe head 9 is of a hollow cylindrical cavity structure provided with internal threads, the second hard threaded pipe head 10 is fixedly sleeved inside and outside two hollow cylindrical cavities with different outer diameters, the hollow cylindrical cavity with the small outer diameter is provided with external threads, the size and the specification of the external threads are the same as those of the internal threads of the first hard threaded pipe head 9, and the hollow cylindrical cavity can be screwed into the first hard threaded pipe head 9; the second hard threaded pipe head 10 is provided with a twisting grip 11, so that the second hard threaded pipe head is more convenient to mount, dismount and use; the negative pressure working device 1 is fixedly connected with the other end of the working conduit 2, the other end of the separation conduit 3 is fixedly connected with the accumulated liquid collecting device 4, one end of the conveying conduit 5 is fixedly connected with the accumulated liquid collecting device 4, the two conduits connected with the accumulated liquid collecting device 4 are arranged in parallel, one end of the separation conduit 3 inserted into the accumulated liquid collecting device 4 is longer than one end of the conveying conduit 5 inserted into the accumulated liquid collecting device 4, and when the accumulated liquid in the accumulated liquid collecting device 4 is excessive, the separation conduit 3 is firstly contacted and led into the separation conduit 3; the negative pressure aspirator with the safety protection function is small in size, simple in structure, beneficial to carry about of doctors and nurses, capable of facilitating the doctors and nurses to clean secretions of respiratory tracts of patients in the transportation process of critical patients and capable of improving the transportation safety of the critical patients; the negative pressure aspirator with the safety protection is easy to operate and control, can be directly operated by a VSD patient or family members of the patient under the permission of a doctor, is provided with a power supply and is convenient to carry, so that the patient can keep an affected part in a necessary negative pressure state while moving, and the medical compliance of the VSD patient is improved; the negative pressure suction apparatus with the safety protection has stable and reliable negative pressure work and good popularization, and is suitable for different departments.
Example 2
Please refer to fig. 5, fig. 5 is a view of a vacuum extractor with safety protection of the present invention. The negative pressure aspirator with safety protection comprises a negative pressure working device 1, a working conduit 2, a separation conduit 3, a effusion collecting device 4 and a conveying conduit 5; the negative pressure working device 1 is provided with a rechargeable battery; the negative pressure working device 1 is internally provided with a water invasion detection protector, a water immersion probe 6 is arranged at the joint of the negative pressure working device 1 and the working conduit 2, the negative pressure working device 1 is provided with a power key, an on-off key, a pressure increasing key and a pressure reducing key, four control buttons 7 and a display screen 8, the negative pressure working device 1 is fixedly connected with one end of the working conduit 2, the other end of the working conduit 2 is provided with a first hard thread pipe head 9, one end of the separation conduit 3 is provided with a second hard thread pipe head 10, the first hard thread pipe head 9 is of a hollow cylindrical cavity structure with internal threads, the second hard thread pipe head 10 is fixedly sleeved inside and outside two hollow cylindrical cavities with different external diameters, the hollow cylindrical cavity with the small external diameter is provided with external threads, and the internal diameter and the internal thread size of the first hard thread pipe head 9, The specifications are the same, and a twisting grip 11 is arranged on the second hard threaded pipe head 10; the accumulated liquid collecting device 4 consists of an accumulated liquid bag 15 and an accumulated liquid bag cover 16, and the accumulated liquid bag 15 is connected with the accumulated liquid bag cover 16; the other end of separation pipe 3 with hydrops flap 16 is fixed continuous, 5 wherein one end of conveying pipe with hydrops flap 16 is fixed continuous, its one end of inserting of separation pipe 3 hydrops collection device 4 will be than its one end of inserting of conveying pipe 5 hydrops collection device 4 is longer. The present embodiment is substantially the same as embodiment 1, except that the effusion collecting device 4 in the present embodiment is composed of the effusion bag 15 and the effusion bag cover 16, the effusion bag 15 is made of a soft material, and the effusion bag cover 16 is made of a hard material, so that the capacity is increased, the effusion collecting degree does not need to be frequently observed in the long-time rest process, and the replacement frequency is reduced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and additions can be made without departing from the principles of the present invention, and these improvements and additions should also be regarded as the protection scope of the present invention.
Claims (7)
1. A negative pressure aspirator with safety protection is characterized by comprising a negative pressure working device, a working conduit, a separation conduit, a effusion collecting device and a conveying conduit; the negative pressure working device is provided with a rechargeable storage battery; one end of the working conduit is provided with a first hard threaded pipe head, one end of the separation conduit is provided with a second hard threaded pipe head, and the end of the working conduit provided with the first hard threaded pipe head is connected with the end of the separation conduit provided with the second hard threaded pipe head through threads; the negative pressure working device is fixedly connected with the other end of the working conduit; the other end of the separation conduit is fixedly connected with the accumulated liquid collecting device; one end of the conveying conduit is fixedly connected with the accumulated liquid collecting device; and two guide pipes connected with the accumulated liquid collecting device are arranged in parallel.
2. The vacuum extractor with safety protection as claimed in claim 1, wherein the vacuum working device is integrated with a water invasion detection protector with a water immersion probe.
3. The vacuum extractor with safety shield as claimed in claim 2, wherein the end of the separation conduit inserted into the effusion collection device is longer than the end of the delivery conduit inserted into the effusion collection device.
4. The vacuum extractor with safety protection as claimed in claim 1, wherein the vacuum working device is provided with a plurality of display screens and a plurality of control buttons.
5. The vacuum extractor with safety protection as claimed in claim 1, wherein the first hard threaded pipe head is a hollow cylindrical cavity structure with internal threads.
6. The negative pressure suction apparatus with safety protection as claimed in claim 1, wherein the second hard threaded pipe head is fixed inside and outside by two hollow cylindrical cavities with different outer diameters in a sleeved manner, and the hollow cylindrical cavity with small outer diameter is provided with external threads and has the same size and specification as the inner diameter and the internal threads of the first hard threaded pipe head.
7. The vacuum extractor with safety protection as claimed in claim 6, wherein the second hard threaded pipe head is provided with a twist grip thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921288545.1U CN211301357U (en) | 2019-08-09 | 2019-08-09 | Negative pressure aspirator with safety protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921288545.1U CN211301357U (en) | 2019-08-09 | 2019-08-09 | Negative pressure aspirator with safety protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211301357U true CN211301357U (en) | 2020-08-21 |
Family
ID=72062647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921288545.1U Expired - Fee Related CN211301357U (en) | 2019-08-09 | 2019-08-09 | Negative pressure aspirator with safety protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211301357U (en) |
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2019
- 2019-08-09 CN CN201921288545.1U patent/CN211301357U/en not_active Expired - Fee Related
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Granted publication date: 20200821 |